Psychrometric Calculator — Moist Air Properties

Inputs

Dry Bulb (°F)

Elevation (ft)

Second Condition

Rel. Humidity Wet Bulb Dew Point

Relative Humidity (%)

Results

Humidity Ratio

—

lb/lb dry air

Grains of Moisture

—

gr/lb dry air

Enthalpy

—

BTU/lb dry air

Specific Volume

—

ft³/lb dry air

Relative Humidity

—

Wet Bulb

—

°F

Dew Point

—

°F

Vapor Pressure

—

in. Hg

Baro. Pressure

—

psia

📊 See this on a psychrometric chart

Want to plot two state points and visualize the process line — sensible cooling, mixing, dehumidification? Use the visual chart tool. Same psychrometric math; saturation curve, RH grid, and process line drawn. No signup required.

Plot on the chart →

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